linux-kernel - Re: [PATCH] mm: move get_page_from_free_area() to mm/page

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Date:   Sun, 19 Mar 2023 20:22:14 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Lorenzo Stoakes <lstoakes@...il.com>
Cc:     Mike Rapoport <rppt@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: move get_page_from_free_area() to mm/page_alloc.c

On Sun, Mar 19, 2023 at 12:07:43PM +0000, Lorenzo Stoakes wrote:
> On Sun, Mar 19, 2023 at 01:42:14PM +0200, Mike Rapoport wrote:
> > From: "Mike Rapoport (IBM)" <rppt@...nel.org>
> >
> > The get_page_from_free_area() helper is only used in mm/page_alloc.c so
> > move it there to reduce noise in include/linux/mmzone.h

Reviewed-by: Matthew Wilcox (Oracle) <willy@...radead.org>

> Good catch, I wonder if there are more functions like this that can be dropped
> from headers?

I don't think anything outside mm/ has any reason to see 'struct
free_area'.  Unfortunately, it's a field in struct zone, so moving
it out of mmzone.h will be hard (unless we can move struct zone out of
mmzone.h?)

free_area_empty() can move to mm/internal.h though